Isihloko mayelana nesimiso sikaPascals
Usetshenziswa kanjani umgomo wokuphakamisa i-hydraulic ukuphakamisa imoto? Uyini umgomo wokusebenzisa amabhuleki e-hydraulic uma usetshenziswa ukunciphisa ijubane lemoto? Sicela ufunde umgomo kaPascal ukuze ukuqonde lokhu.
Lonke uketshezi luhlala lucindezela zonke izinto ezithintana nalo. Amanzi esiwafaka engilazini azocindezela odongeni lwengilazi. Ngokufanayo, uma sigeza echibini lokubhukuda noma emanzini olwandle, amanzi echibi noma amanzi olwandle nawo acindezela umzimba wethu wonke.
Ingcindezi iyonke yamanzi ekujuleni okuthile, isibonelo, ingcindezi yamanzi olwandle ekujuleni kwamamitha angu-200 iyinani lengcindezi yomoya kanye nengcindezi elinganisiwe ekujuleni kwamamitha angu-200. Ngakho-ke, ngaphandle kwengcindezi yamanzi.
Kukhona nomoya ocindezela ubuso bamanzi olwandle.
Ingcindezi yomoya isebenza kuzo zonke izindawo eziwuketshezi, futhi ingcindezi isatshalaliswa kuzo zonke izingxenye zoketshezi. Ngakho-ke, ingcindezi iyonke yoketshezi ekujuleni okuthile ngaphandle kokubangelwa ingcindezi yongqimba loketshezi oluphezulu nayo ithintwa yingcindezi yomoya.
Ukuze siqonde kabanzi le ncazelo, ake sibukeze uketshezi olusesitsheni.
Ingcindezi yoketshezi phansi kwesitsha, vele, iphakeme kunengcindezi yoketshezi phezulu. Uma iphansi kakhulu, ingcindezi yoketshezi iphakeme, ngokuphambene nalokho, lapho isondela ebusweni obungaphezulu besitsha, ingcindezi yoketshezi incane.
Inani lokucindezela lilingana no-ρ gh (ρ = ukuminyana, g = ukusheshisa amandla adonsela phansi kanye no-h = ukuphakama noma ukujula). Endaweni ngayinye ekujuleni okufanayo, inani lokucindezela liyafana. Lokhu kusebenza kuzo zonke izinto ezimanzi kunoma yisiphi isitsha futhi akuxhomekile ekumeni kwesitsha.
Uma sengeza ingcindezi yangaphandle, isibonelo ngokucindezela ubuso boketshezi, ukwanda kwengcindezi koketshezi kuyafana yonke indawo. Ngakho-ke uma kunikezwa ingcindezi yangaphandle, ingxenye ngayinye yoketshezi ithola inani elifanayo lengcindezi. Ngakho-ke, ingcindezi ihlala ifana kuzo zonke izindawo ekujuleni okufanayo. Lona uMthetho kaPascal, owaqalwa futhi waqanjwa ngokwegama likaBlaise Pascal (1623-1662). UPascal ungumfilosofi nososayensi waseFrance.
Isimiso sikaPascal sithi ingcindezi esetshenziswa oketshezini olusendaweni evaliwe izodluliselwa engxenyeni ngayinye yoketshezi kanye nezindonga zesitsha.
Ukusetshenziswa Kwesimiso SikaPascal
Ngokusekelwe esimisweni sikaPascal, abantu bakhiqize amathuluzi amaningana, alula nayinkimbinkimbi, ukusiza ukwenza impilo ibe lula. Amanye awo yi-Hydraulic Lifts, Hydraulic Brakes, njll.
I-Hydraulic Lift
I-hydraulic lift yakhiwa umkhumbi onezindawo ezimbili. Kuzo zombili izindawo, kukhona i-piston, lapho indawo yobuso be-piston ngakwesobunxele incane kunendawo yobuso be-piston ngakwesokudla. Indawo yobuso be-piston ilungiswa ukuze ihambisane nendawo yobuso bomkhumbi. Imikhumbi igcwele uketshezi, njengezithambisi.
Uma i-piston enendawo encane ebusweni icindezelwe phansi, ingxenye ngayinye yoketshezi nayo
Kucindezelwe phansi. Inani lokucindezela elinikezwa yi-piston enobuso obuncane lidluliselwa kuzo zonke izingxenye zoketshezi. Ngenxa yalokho, uketshezi lucindezela i-piston ngendawo enkulu yobuso kuze kube yilapho i-piston icindezelwa phezulu. Indawo engaphezulu ye-piston ecindezelwe incane kangangokuthi amandla adingekayo ukucindezela uketshezi nawo mancane. Kodwa ngenxa yokuthi ukucindezela kuyaqhubeka kuzo zonke izingxenye zoketshezi, amandla amancane ayashintsha lapho uketshezi lucindezela i-piston ngakwesokudla ngendawo enkulu yobuso. Akuvamile ukuthi abantu banikeze amandla okungena e-piston enendawo enkulu yobuso ngoba ayizuzisi? Phezulu kwe-piston enendawo enkulu yobuso kuvame ukubekwa izinto noma izinto ezifuna ukuphakanyiswa (isibonelo, imoto).
Ungamangali uma imoto enobunzima obukhulu iphakanyiswa kalula ngokucindezela enye yama-piston. Indawo engaphezulu ye-piston incane kangangokuthi amandla esiwanikezayo nawo mancane. Kodwa-ke, amandla amancane okufaka angashintshela ekubeni amandla amakhulu okukhipha uma indawo engaphezulu yokukhipha inkulu.
Inkinga yesibonelo 1:
Kwaziwa:
A1 = 100cm2
A2 = 250cm2
F 1 = 200 N
Kufunwa: F2
Isixazululo:
Inkinga yesibonelo 2:
Kwaziwa:
A1 = 100cm2 = 100 x10-4 m2 = 0.01m2
A2 = 250cm2 = 250 x10-4 m2 = 0.025m2
Isisindo somthwalo = 200 kg
Ubuningi bamafutha (ρ) = 780 kg/m3
Ukuphakama kwekholomu kawoyela (h) = 2 m
Ukusheshisa kwamandla adonsela phansi (g) = 10 m/s 2
Kufunwa:
Yini ubuncane okokufaka amandla (F) ukuze umthwalo ube sesimweni sokulinganisela (umthwalo awuhambi)?
Isixazululo:
